Unlocks layout panel.

<div class="definition">
    unlock(panel)
</div>

<div class="arguments">
    <table>
    <tr>
        <td>type</td>
        <td><b>string</b>, name of the panel</td>
    </tr>
    </table>
</div>

<h4>Description</h4>

This method will unlock the panel previously locked with <a href="w2layout.lock" class="method">.lock()</a> method. This method will call
<a href="w2utils.unlock" class="method">w2utils.unlock()</a> to perform the action. The first argument <span class="argument">type</span> is
the name of the panel. It can be one of the following:
<ul style="margin-left: 50px">
    <li>top
    <li>left
    <li>main
    <li>right
    <li>preview
    <li>bottom
</ul>
<div style="height: 10px"></div>

To unlock main panel
<textarea class="javascript">
w2ui.layout.unlock('main');
</textarea>